Loose-leaf binder.



H. HELLWEG.

LOOSE LEAF BINDER.

APPLICATION FILED PEB.6,1911.

Patented July 22, 1913.

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HENRY HELLWEG, 0F MILWAUKEE, WISCONSIN, ASSIGNOR T SAMUEL D. PAGE AND COTJIPANY, OF DES MOINES, IOVA, A COPARTNERSHP CONSISFING OF SAMUEL 1).

PAGE AND CHARLES I-IERKNER.

LOSELEAF BINDER.

Specication of Letters Patent.

Patented July 225, 1913.

Application filed February 6, 1911. Serial No. 606,709.

To all whom, it may concern:

Be it known that l, llnnnv l-lnLLwno, ol Milwaukee, llVisconsin, have invented a LoosceLeaf linder, of which the :following is a specification.

rllhis .invention relates to loose-loaf bindeis ot the telescoping type, in which a pair of baclwplates, which inay or niay not be inade with angular extensions covering the back edge of the book, are held together in variable relation by means of a plurality of telescopic posts, said posts being inade in two sections one of which slides within the other, and is provided with ineans for securing it thereto in any desired position of extension.

A coininon means of clainping the two sections ot the back consists in screw-posts operating within the post-sections, each screw-post turning in the larger section, and engaging a thread on the end of the sinaller section.l On account of the tact that the scrcw-post has to operate the entire length of the sinaller section, it is necessary either to thread' it `tor suoli length, or else to reain out the outer end oft the post to avoid the threading operation. Either operation, when the post is inade oit inetal tubing as is customary, is expensive and it is one of the objects of this invention to provide a cheaper constri'iction.

Another object of this invention is to provide ineans for strengthening and solidifying the post7 and l do this by providing a web near the outer end oi' the outer telescoping-section thereof, between it and the back flange oi' the back-plate, in a inanncr which will be hereinafter incre particularly described and set forth in iny claiins.

ln the accompanying drawings, l have illustratedv the niost improved torni of iny invention in various views and sections, and herein- Figure l is a vertical transverse section on a magnified scale el a binder-back constructed according to iny invention, through the axis of one of the posts; the instal only being shown, and the pasteboard and cloth filling and covering omitted. 2 and 3 are longitudinal. fragmentary sections through the back on the planes f2 and 3 respectively; Figs. Ll and 5 are horizontal sections through the saine parts on the planes 4 and 5 respectively; Fig. G is a perspective view of an inner post-section as partly iinislied and ready tor tapping and riveting to the back-plate; and Fig. 7 illustrates a pair ot dies to show how the crimped end ol the inner post-section is for-ined.

The back-plates are designated respectively A and ll, said baclcplates being pro` vided in this case with telescoping back- 'llanges a and which cover the back edge of the book. Only one oit the sectional posts is shown, it will be understood that two or inore of such posts will ordinarily be as usual used tor each binder.

Each post comprises outer and inner telescoping-sections C and D, said telescopingsections being secured at their ends to the back-plates, and for this purpose being provided with the forin of fastening described and claimed in my coponding patent application lilled of oven date herewith, said laslteniiig con'iprising a pair oiE tangs or ears c, d toriiied by ciiitting away the inetal from opposite sides of the end ot the postsection, said tangs or ears being subsequently bent outwardly, and passing through slots a?, b2 torined in the back-plates to receive theni, and the ends of said tangs or ears being subsequently clenched upon the outer tace of the bacleplates as shown. However, this ttorin ot fastening is not essential to the construction ot the elements, to which the present invention inore particularly relates.

To secure the two post-sections together in variable relation is used the screwpost ll having on its ripper end the manipulating handle e. This screw-post is such as is ornarily used, the peculiar feature relating thereto being' the means by which it is laused to engage the upper end of the post-sectioii D Instead oft ina-king the post-section D ot a sinallei diameter than the screw-post, so that it can be and inust be threaded and reained i'or its entire length, I inale the postsection oit large enough diameter so that the screw-post lits loosely therein, and l coinpress the upper end of the post in the inair ner illustrated incre particularly in F ig. G, so as to itorin a tubular portion cl2 ot sinallcr diameter', which can be tapped to the thread ot the screw-post E, as shown in Fig, l; the surplus metal being disposed in the :torni of criinps (Z3. I have found it is best to do this by ineans of the pair of dies F, G shown in Fig. 7, which represents the end of the postsection D between them ready to be compressed. Vhen the die G descends to the position shown in the dotted lines, the end of the post-section will have assumed the form shown at (Z2, (Z3 in Fig. 6. This method completely avoids the necessity of the reaming operation, and makes it only necessary to tap the short compressed portion cl2, thus saving much labor and material.

lilith regard to the outer post-section C, it is to be observed that in my present invention this is not made of seamless metal tubing as usual, but is made of sheet-metal rolled into the form of a tube with abutting edges c2 at the back; and its rigidity is reinforced by means of a web formed of flange-like extensions c3 on the two edges c2 at or near the free end of the post. Said extensions c3 are provided with shoulders 04 on their edges at the point where they meet the back-flange Z2 of the back-plate B, and beyond this with ears c5 which pass through a slot b3 in the flange Z/ and are bent over 'flat upon the outer face thereof, as clearly shown in Fig. 5. This makes a strong and rigid connection between the back-liange and the post, and the latter is therefore not dependent upon its end fastenings c, d to keep it in line. The back-flange Z2 has preferably a depression Z9* pressed thereinto to receive the ears c5 flush on the outer side, so as to avoid their projection beyond the face, and this also forms a sort of basin which may receive and be lled with the solder H. It should be understood, however, that the strength of my reinforcement is in no wise dependent upon soldering.

From the above description it will be readily seen that my invention is not limited to special forms and mechanical constructions such as l have hereinabove shown by way of illustration, but that the principles thereof are expressible in a variety of ways as will be well understood by those skilled in the art; therefore the scope of my claims is to be interpreted in view of such alternative construction.

Having thus described my invention, what l claim as new and desire to secure by Letters Patentis:

Il. In a loose-leaf binder, in combination with a flanged back-plate, a reinforced postsection having a web connecting its outer end with the flange of the back-plate; said back-flange having a slot therein and said web having ears upon its end which pass through said slot and are spread upon the outer side thereof.

2. ln a loose-leaf binder, in combination with a flanged back-plate, a reinforced postsection having a web connecting its outer end with the flange of the back-plate; said back-flange having a slot therein and said web having ears upon its end which pass through said slot and are spread upon the outer side thereof, there being an abutment shoulder upon the edge of said web at the base of said ears.

3. ln a loose-leaf binder, in combination with a vflanged backplate, a reinforced postsection having a web connecting its outer end with the flange of the back-plate; said back-flange having a slot therein and said web having ears upon its end which pass through said slot and are spread upon the outer side thereof, the back-plate being formed with a basin-like depression surrounding and containing said ears flush with the outer surface of the back-flange.

Ll. 1n a loose-leaf binder, in combination with a flanged back-plate, a reinforced postsection having a web connecting its outer end with the flange of the back-plate; said back-flange having a slot therein and said web having ears upon its end which pass through said slot and are spread upon the outer side thereof, the back-plate being formed with a basinslike depression surrounding and containing said ears flush with the outer surface of the back-flange and said depression being filled with solder which unites said ears to the back-plate.

5. ln a loose-leaf binder, the combination with a flanged back-plate of an outer postsection secured thereto at its base and formed of sheet-metal bent into 'cylindrical form with abutting edges, said abutting edges being opposite the back-flange of the back-plate; the free end of the post being provided with flanged extensions extending from said abutting edges to the baclnflange and having one or more shoulders which abut thereagainst; and beyond said shoulders a pair of ears passing through a slot in said back-plate and spread upon the outer side of the back-plate.

6. In a loose-leaf binder, the combination with a. flanged back-plate of an outer postsection secured thereto at its base and formed of sheet-metal bent into cylindrical form with abutting edges, sail abutting edges beinO opposite the back-flange of the back-plate; the free end of the post being provided with flange-extensions extending from said abutting edges to the back-flange and having one or more shoulders which abut thereagainst; and beyond said shoulders a pair of ears passing thro-ugh a slot in said back-plate and spread upon the outer side of the back-plate, and said back-flange being provided with a basin-like depression which receives and contains said ears flush with the outer surface of the back-plate.

7. ln a loose-leaf binder, the combination with a flanged back-plate of an outer postsection secured thereto at its base and formed of sheet-metal bent into cylindrical form with abutting edges, said abutting edges being opposite the back-flange of the back-plate; the free end of the post being provided with flange-extensions extending from said abutting edges to the lmek-lange and having' one orv more shoulders which abut theleaganst; und beyond said shoulders u pair of ears passing througll u slot in said back-plate Iand Spread upon the outer side of the buolvplate, und Said bncle'laalge being provided with a basin-like depression 10 which receives and contains said ears flush with the outer surface of J[he baclvphtte, and solder lllng sold depresslon :md umtmg sind ears and back-flange together.

In Wltness whereo1 I have hereunto set my hund 111 the presence of two Wlt-nesses.

HENRY HELLVVEG.

Ttnesses GEORGE WT. CoLLEs, F. M. MALLoN.

Copies of this patent may be obtained for ve cents each, by addressing they Commissioner of Patents. Washington, IJ. C. 

